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(No Model.) 2 sheets-sheet 1.

W. L. MURPHY. Evaporator and Furnace. N0. 242,353. APatented May 31,1881.

llllllll l f (No Model.) 2 sheets-sheen 2. W. L. MURPHY. Evaporator and Furnace.

Patened May 31,1881.

'WJTJVES ES WILLIAM L. MURPHY, OF

ATENT arten, e e

NASHVILLE, TENNESSEE.

EvAPoRAToR AND FURNACE.

SPECIFICATION forming part of Letters Patent No. 242,353, dated May 31, 1881.

Application cita August 5, 1880. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM L. MURPHY, a p citizen of the United States, resident at Nashville, in the county of Davidson and State ot' Tennessee, have invented certain new and useful Improvements in Evaporators and Furnaces; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures ot' reference marked thereon, which form a part of this specification.

This invention has relation to evaporators, and it consists in the improved features of construction and combination hereinafter fully described, and particularly pointed out in the claims.

Figure l is a view, in perspective, ot' my improved evaporator. Fig. 2 is a central vertical longitudinal sectional view. Fig. 3 is a perspective view of an end-overflow pan, and Fig. 4 is a vertical longitudinal view ot' the same.

Referring by letter to the drawings, A designates the furnace, provided with a grate, B,

lined with brick and pivoted centrally on the circular stand C. It is provided at each end with a wheel, the rear wheel, E, being larger than the front wheel, F. The wheels E and F serve a double purpose-viz., that of permitting the furnace to be turned so that it will have a proper draft and the ashes and cinders will not be blown into the contents of the pan; and, secondly, either of the wheels may be elevated by placing a plank or board between it and the ground, and scraping the dirt from beneath the wheel at the other end to give the pans the proper incline.

G designates the pan, having wooden sides and galvanized-iron bottom and ends. This pan is divided into from one to tive, or more, compartments. Oompartmentlisformedalong two sides and one end of the compartments 2, 3, 4, and 5 in a side-overow pan, Figs. 1

and 2, and at one end of the pan in an end-l overtlow pan, Figs. 3 and et. In the sideover flow pan the end partitions are made lower than the partitions H between the compartments, and an adjustable or detachable partition,`I, is secured to the end partitions, J, and

I the side partition, H,ofcompartment 2, so that it may be removed and Yreplaced at pleasure. Bolts a and nuts bare employed to secure the removable partition I in place. In the endovertlow pan the partition K, between compartments l and 2, is made adjustable by securing a slotted wooden piece, L, to the partition K, so that the height ot' the partition may be increased or diminished at pleasure. Its

height, however, need never exceed that ofthe other partitions, L, of the pan, but is usually set so that it is below their height. Communication is opened between the several coml partmen ts by means ofelbow-pipes M, provided with strainers N, fitted on collars Pin the partitions separating the compartments, so that they may be turned up to cut oft communication between the compartments when necessary. Sliding gates or eut offs may be employed for the same purpose, except between compartments l and 2, where the strainers must be employed to strain the juice as it flows from compartment 1 to 2.

I also employ with the evaporator an ad just able cooler, Q, consisting of a metal tray, R, provided with anges S at each end and lined with brick, which I interpose between the tire and the bottom ot' the pan at either end thereof, as may be required for cooling the con tents of the pan.

In operation the juice is let into compartment 1, and is permitted to spread over the entire bottom surface of the pan before building the tire in the furnace. The cooler is placed at thefront end ofthe furnace, beneath the pan, to keep the juice coolest where it first enters the pan. Ot' course the cooler may be shifted to the other end of the furnace when it is neeessary to cool the molasses, or a second cooler may be used at that point. The adjustable partition should be so arranged in the sideoverow pan that the partitions H will be the highest, and the elbow-pipe between 2 and 3 to cut oft' compartment 2 from 3. The re is the hottest directly under compartment 2, and the boiling is most rapid in said compartment, so that the scum and froth boil over the lower partition into compartment 1, where it comes in contact with and tloats upon the cooler or fresh juice which is kept running, and from which it can be readily skimmed. After the IOO juice has been partially boiled in compartment 2 it is passed into compartment 3, there boiled, thence to 4 and 5,in which it is finished, cooled, drawn olf, and barreled. In the end-overflow pan the partition between compartments 1 and 2 is adjustable vertically, and is made lower than the others, in order that the froth, 85e., may boil over into compartment 1. In the side-overtlow pan, should the contents ot' any of the compartments from 2 to 5 boil over, the froth, Ste., will fall into compartment 1, where it may be skimmed ofi'.

This construction of evaporator does not require the attention of one person all the time, as in the old construction, where he must be kept constantly skimming, but affords ample time for the operator to attend to the mill, the furnace, and to skimming, thereby dispensing with the services of one man.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

1. In an evaporator, the furnace mounted and pivoted upon the circular stand C, and provided with the wheels E and F at opposite ends, as set forth.

2. In an evaporator, the pan provided with the compartments 1, A2, Svc., having elbow-pipe and strainer between them to open and close communication, and the adj ustable partition to permit the overow ot' froth, 85e., constructed and operating substantially as set forth.

In testimony whereof I aflx my signature in presence of two witnesses.

WILLIAM LEE MURPHY.

Witnesses:

Jas. T. PAT'rERsoN, MARTIN J. WALSH. 

